When locking or unlocking the screen lock, an audible feedback can be activated on the LG smartphone. The screen lock sound can be used with all unlock methods. Only when the screen lock is off, no sound is heard.

Android 9 (LG UX 9.0)
Step 1:  Open the  Settings
Step 2:  Tap on  Sound
Step 3:  Enable or Disable  Screen lock sound
  1. Open the Settings
  2. Tap on Sound
  3. Enable or Disable Screen lock sound

LG Instructions
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